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Showing content from https://en.cppreference.com/w/cpp/language/../header/../coroutine/suspend_always.html below:

std::suspend_always - cppreference.com

struct suspend_always;

(since C++20)

suspend_always is an empty class which can be used to indicate that an await expression always suspends and does not produce a value.

[edit] Member functions indicates that an await expression always suspends
(public member function) no-op
(public member function) no-op
(public member function) std::suspend_always::await_ready

constexpr bool await_ready() const noexcept { return false; }

Always returns false, indicating that an await expression always suspends.

std::suspend_always::await_suspend

Does nothing.

std::suspend_always::await_resume

constexpr void await_resume() const noexcept {}

Does nothing. An await expression does not produce a value if suspend_always is used.

[edit] Example [edit] See also

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